Band conveyer



C. E. BERGH .BAND CONVEYER Filed Dec. 24,- 1935 Aug. 9, 1938.

INVBNTOR Hgs m g W @m N T A 4 LM UNITED STATES ATENT OFFIQE BANDCONVEYER Carl Erland Bergh, Langshyttan, Sweden Application December 24,1935, Serial No. 55,943

In Sweden September 29, 1932 2 Claims. (Cl. 198-201) The usual steelband conveyers which consist Figure 1 and the break idler roller by 2.When of flat endless steel bands running upon rollers the band I passesthe break idler roller 2 the band are connected with certain drawbacks,one of the obtains a flat cross section but due to its great mostconspicuous of which is that the material to elasticity the bandimmediately reassumes its be conveyed has difficulty, in remaining onthe concave form after having passed the return 5 band and fallslaterally of the same before reachpoint. This is also evident in Figure2, wherein ing the discharge place. It is also clear that a it may alsobe noted that the band I is capable of fiat convey-er cannot transportthe same quantity supporting itself between rollers 2 and 3 by its ofmaterial as a concave one during the same resistance to sagging. period,Thus, the above mentioned drawbacks of the An object of the presentinvention is to provide flat steel band conveyers hitherto used are reaconveyer which unites in itself the advantages moved by using a steelband having itself a conof the fiat steel band conveyers and those ofthe cave cross section. concave belt conveyers. Having now described myinvention, what I A further object of the invention is to provide claimas new and desire to secure by Letters Pata conveyerin which the simpledriving devices inent is: tended for the fiat steel band conveyers maybe A band conveyer co pri in an v y used and the same quantity ofmaterial may be silient steel conveyer band running OVeI reak conveyedper unit of ti a by th n a b lt rollers which is inherently exteriorlyconcave in 2 conveyers. cross section so as to automatically form ashallow The invention is illustrated by way of example trou i unr r in dcondition between the in the accompanying drawing, in which Figure 1rollers and capable of be g temporarily @0111- represents a perspectiveview of the part of a p y fl ttened in cross section up running bandconveyer where the band passes a break over a break roller.

idler roller. 2. In a conveyer including a metal conveyer 25 Figure 2 isa side elevation of the same band band according to claim 1, thefeatures of having conveyer with two break rollers and the conveyer theband endless and made of thin resilient spring band in position thereon.steel which is slightly concave and capable of The concave steel bandwhich for example is Supporting itself between spaced break rollers.driven by means of rollers is indicated by I in CARL ERLAND BERGH.

